Commit 3ae70c25 authored by Vincent Donnefort's avatar Vincent Donnefort Committed by Ingo Molnar
Browse files

cpu/hotplug: Allowing to reset fail injection 



Currently, the only way of resetting the fail injection is to trigger a
hotplug, hotunplug or both. This is rather annoying for testing
and, as the default value for this file is -1, it seems pretty natural to
let a user write it.

Signed-off-by: default avatarVincent Donnefort <vincent.donnefort@arm.com>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
Link: https://lkml.kernel.org/r/20210216103506.416286-2-vincent.donnefort@arm.com
parent b89997aa

kernel/cpu.c

+5 −0
Original line number Diff line number Diff line
@@ -2207,6 +2207,11 @@ static ssize_t write_cpuhp_fail(struct device *dev, 
	if (ret)

		return ret;



	if (fail == CPUHP_INVALID) {

		st->fail = fail;

		return count;

	}



	if (fail < CPUHP_OFFLINE || fail > CPUHP_ONLINE)

		return -EINVAL;